Cox's costumed appearance wasn't a total surprise. As Pitchfork points out, the Atlanta musician commandeered the Black Lips' Twitter feed earlier that same day, at one point typing, "There are rumors of a resurrected ghost making a guest appearance at tonight's show."

As usual, Cox has plenty of other projects in the works. His latest Atlas Sound album, Parallax, is due out November 8 -- hear first taste "Terra Incognita" here. As for Deerhunter, the noise-streaked art-rockers recently covered Georgia alt-rock icons Pylon in the midst of a recently concluded summer tour.